Hay Rake And Tedder

How To Identify The Moldy Corn

Mildewed corn to feed pigs could lead to a pig poisoning and loss of appetite.In order to avoid the pigs eat mildew corn.The breeder should learn "how to identify the moldy corn".

1.Mildewed corn germ have yellow or green, black hyphae;
2.Mildewed corn husk separation easily;
3.The corn germ internal of the moldy corn have bigger black or dark gray area;

4.On the palate, good corn taste sweet, mold corn taste bitter;
5.On the plumpness, mildewed corn proportion is low, the grain is not full.

6.Black corn kernels, is caused by high temperature and humidity for a long time;Germ skin is green, it is caused by threshing early and too late sun;The skin color of germ is green or black,it is because the boring time is too long.

2 rows corn harvester

How To Protect Corn Disease

Last winter and spring, high temperatures, rainfall below normal, large favorable overwintering pests, field population density.According to the survey, the current sweet corn is in the jointing to heading stage, the main pests and diseases are corn borer and large and small spot disease.

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First . Pest occurrence.
Corn Borer: According to the survey, the average damage rate of sweet corn strains 4.04% and 9% higher. The average deposit insect 180.68 acres, the current field to 3,4 instar based.

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Large and small spot disease: According to the survey, the average incidence of strains of 6.26%, 13.48% higher; leaves the average incidence rate of 27%, mainly in the lower leaves occur.

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Second, the analysis of trends occur.
According to the Guangzhou international professional weather forecast, Guangzhou May rainfall slightly less 1 to 2 percent, or slightly less normal June 1 to 2 percent in the late late April, mid-May Early, late and early June in mid-late June there will be four major precipitation process.

Third, control advice.
1, the timely removal of pests leaves and debris, and concentrated buried or burned. Well Fitness cultivation, improve plant disease and insect resistance ability.

2. Timely chemical control requires the use of high efficiency, low toxicity and safe agents for prevention and treatment, the rain if the spraying, spraying should promptly fill in the rain.

Rice Drought Resistance Gene

Drought stress is a major limiting factor for crop production. Cuticular wax plays an important role in preventing water loss from drought stress. However, the genetic control of cuticular wax deposition under drought stress conditions has not been characterized. 

Here, we identified a rice gene Drought-Induced Wax Accumulation 1 (DWA1) encoding a very large protein (2,391 aa in length) containing multiple enzymatic structures, including an oxidoreductase-like domain; 

a prokaryotic nonribosomal peptide synthetase-like module, including an AMP-binding domain; and an allene oxide synthase-like domain. This previously unreported putative megaenzyme is conserved in vascular plants. A dwa1 KO mutant was highly sensitive to drought stress relative to the WT. DWA1 was preferentially expressed in vascular tissues and epidermal layers and strongly induced by drought stress. 

The dwa1 mutant was impaired in cuticular wax accumulation under drought stress, which significantly altered the cuticular wax composition of the plant, resulting in increased drought sensitivity. The mutant had reduced levels of very-long-chain fatty acids, and plants overexpressing DWA1 showed elevated levels of very-long-chain fatty acids relative to the WT. 

The expression of many wax-related genes was significantly suppressed in dwa1 under drought conditions. The AMP-binding domain exhibited in vitro enzymatic activity in activating long-chain fatty acids to form acyl-CoA. Our results suggest that DWA1 controls drought resistance by regulating drought-induced cuticular wax deposition in rice. This finding may have significant implications for improving the drought resistance of crop varieties.

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How to prevent potato blackleg disease

Potato blackleg disease is very serious for potato disease,all the grouth period can occure,mainly harm stem base and tubers,make a big damage in the field and cause rotting tubers.This kind of disease is characteristic of early onset, rapid onset, high mortality. It’s very diffulcut to preventent.For damage symptoms of potato blackleg disease occurrence, proposed control measures.

From the onset of symptoms of the disease to the late seedling growth may be the disease, mainly against plant stem base and tubers. Occurrence of the disease is caused by bacteria,Spread through contaminated seed but the soil are generally not contaminated.Contaminated seed and the field is not completely rotten potato primary infection source of disease, with a knife seed is the main way to expand the spread of disease.

Occurrence of disease onset condition is closely related to the degree of temperature and humidity.At higher temperatures the incidence of weight, high temperature and humidity, is conducive to bacterial growth and harm.

Heavy clay soils and poorly drained soils favorable for onset, heavy clay soils often low soil temperature, plant growth is slow, is not conducive to the formation of cork host tissue, reduces the ability of the anti-intrusion; heavy clay soil moisture, is conducive bacteria, spread and invasion, thus heavy clay soil, the incid

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Potato environmental requirements

1 potato prefer to like light, because the potato is very like the light, so, it should have the moderate sunshine. it's fear the low light.the length of sunlight should be moderate, about 12 hours. the following condition are very good for potato.Seedling short day, light and proper temperature, tuber long day, light and proper temperature, tuber growth and accumulation of starch shorter day, light, proper temperature and larger temperature difference between day and night.

2.like cold weather,can not endure high temperature during growth in daily average temperature 17 ~ 21 ℃ is appropriate.germinationTemperature should be12 ~ 18 ℃, it's very suitable.Leaf growth requires a higher temperature to 20 ℃ is the most appropriate; Tuber expansion requires a lower temperature, the optimum soil temperature is 16 ~ 18 ℃.

3.like the dry climate, fear of wet weather potato Relative Humidity of 70% to 80% better.

4.Hi moist soil, dry afraid, afraid stains fat trees of soil moisture should be maintained at 70% to 80% maximum water holding capacity of the soil; later made to properly control the water supply of trees, soil moisture should be reduced to 60% to 80%; soil moisture tuber period should be increased to 80% to 85%.

5.Requirements to topsoil deep soil, loose structure, good ventilation and drainage soil rich in organic matter is the most suitable, in particular large porosity, aeration sandy loam cultivated potato, quick emergence, early tuber formation, tuber tidy , potato skin smooth, both high yield and starch content.

6. potato nutritional needs throughout the growing season to absorb most of potash, nitrogen, followed by phosphate least. Each producing about 1,000 kg of tubers absorb nitrogen from 5 to 6 kilograms of pure phosphorus from 1 to 3 kilograms of pure potassium 12 to 13 kg

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